# std::pmr::monotonic_buffer_resource::monotonic_buffer_resource

From cppreference.com
< cpp‎ | memory‎ | monotonic buffer resource

monotonic_buffer_resource(); | (1) | (since C++17)
explicit monotonic_buffer_resource( std::pmr::memory_resource* upstream ); | (2) | (since C++17)
explicit monotonic_buffer_resource( std::size_t initial_size ); | (3) | (since C++17)
monotonic_buffer_resource( std::size_t initial_size, std::pmr::memory_resource* upstream ); | (4) | (since C++17)
monotonic_buffer_resource( void* buffer, std::size_t buffer_size ); | (5) | (since C++17)
monotonic_buffer_resource( void* buffer, std::size_t buffer_size, std::pmr::memory_resource* upstream ); | (6) | (since C++17)
monotonic_buffer_resource( const monotonic_buffer_resource& ) = delete; | (7) | (since C++17)

Constructs a `monotonic_buffer_resource`. The constructors not taking an upstream memory resource pointer use the return value of std::pmr::get_default_resource as the upstream memory resource.

1,2) Sets the current buffer to null and the next buffer size to an implementation-defined size.
3,4) Sets the current buffer to null and the next buffer size to a size no smaller than initial_size.
5,6) Sets the current buffer to buffer and the next buffer size to buffer_size (but not less than 1). Then increase the next buffer size by an implementation-defined growth factor (which does not have to be integral).
7) Copy constructor is deleted.

### Parameters

upstream | - | the upstream memory resource to use; must point to a valid memory resource
initial_size | - | the minimum size of the first buffer to allocate; must be greater than zero
buffer | - | the initial buffer to use
buffer_size | - | the size of the initial buffer; cannot be greater than the number of bytes in `buffer`

Retrieved from "https://en.cppreference.com/mwiki/index.php?title=cpp/memory/monotonic_buffer_resource/monotonic_buffer_resource&oldid=160241"